Regulator Examines Bitcoin Practices

New York Issues Subpoenas to Firms Tied to Bitcoin

New York's top banking regulator has issued subpoenas to roughly two dozen companies associated with bitcoin as part of a wide-ranging inquiry into the business practices of the fledgling virtual-currency industry, according to people familiar with the matter.

The subpoenas, from the New York Department of Financial Services, seek information on a range of topics, including antimoney-laundering programs, consumer-protection measures...